better fix for infinite loop in HandleOnNavigationKey() when wxUSE_STL==1 and start_n...

[wxWidgets.git] / src / html / htmltag.cpp

diff --git a/src/html/htmltag.cpp b/src/html/htmltag.cpp
index f5e93ffa033914e5fe09e94cf0d7f6f554d29b3f..98a1ff4fba8b485f36ac821d0a03407d9dec0a76 100644 (file)
--- a/src/html/htmltag.cpp
+++ b/src/html/htmltag.cpp
@@ -7,11 +7,6 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "htmltag.h"
-#endif
-
 #include "wx/wxprec.h"
 
 #include "wx/defs.h"
@@ -114,14 +109,14 @@ wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source)
             else
             {
                 m_Cache[tg].End1 = m_Cache[tg].End2 = -1;
-                
+
                 if (wxIsCDATAElement(tagBuffer))
                 {
                     // store the orig pos in case we are missing the closing
                     // tag (see below)
-                    wxInt32 old_pos = pos; 
+                    wxInt32 old_pos = pos;
                     bool foundCloseTag = false;
-                    
+
                     // find next matching tag
                     int tag_len = wxStrlen(tagBuffer);
                     while (pos < lng)
@@ -152,7 +147,7 @@ wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source)
                         }
 
                         // found a match
-                        if (match_pos == tag_len) 
+                        if (match_pos == tag_len)
                         {
                             pos = pos - tag_len - 3;
                             foundCloseTag = true;
@@ -194,6 +189,16 @@ void wxHtmlTagsCache::QueryTag(int at, int* end1, int* end2)
         int delta = (at < m_Cache[m_CachePos].Key) ? -1 : 1;
         do
         {
+            if ( m_CachePos < 0 || m_CachePos == m_CacheSize )
+            {
+                // something is very wrong with HTML, give up by returning an
+                // impossibly large value which is going to be ignored by the
+                // caller
+                *end1 =
+                *end2 = INT_MAX;
+                return;
+            }
+
             m_CachePos += delta;
         }
         while (m_Cache[m_CachePos].Key != at);
@@ -355,12 +360,12 @@ wxHtmlTag::wxHtmlTag(wxHtmlTag *parent,
         }
 
         #undef IS_WHITE
-   }
-   m_Begin = i;
+    }
+    m_Begin = i;
 
-   cache->QueryTag(pos, &m_End1, &m_End2);
-   if (m_End1 > end_pos) m_End1 = end_pos;
-   if (m_End2 > end_pos) m_End2 = end_pos;
+    cache->QueryTag(pos, &m_End1, &m_End2);
+    if (m_End1 > end_pos) m_End1 = end_pos;
+    if (m_End2 > end_pos) m_End2 = end_pos;
 }
 
 wxHtmlTag::~wxHtmlTag()
@@ -511,13 +516,4 @@ wxHtmlTag *wxHtmlTag::GetNextTag() const
     return cur->m_Next;
 }
 
-#if WXWIN_COMPATIBILITY_2_2
-
-bool wxHtmlTag::IsEnding() const
-{
-    return false;
-}
-
-#endif // WXWIN_COMPATIBILITY_2_2
-
 #endif